The Yamaha DGX-630 offers an affordable, feature-packed portable keyboard that boasts an authentic grand piano-like touch: heavy in the low end, feathery light in the highs, and amazingly responsive throughout. It also includes USB MIDI and USB to Device for removable storage, along with a high resolution Live! Grand stereo sample, song recorder, score and lyric display. The USB facilitates easy transfer with a PC or Macintosh computer for use with many optional software packages that can score, arrange, and sequence your music. Can"t play a keyboard instrument? Yamaha Education Suite helps you get started. With nearly 500 voices and built-in stereo speakers, the Yamaha DGX-230/AD is truly a grand keyboard music instrument that you and your family will enjoy. Pitch bend wheel to add smooth pitch variations to notes played Voices - 116 panel voices + 12 drum/SFX kits + 361 XGlite voices, Polyphony - 32, DUAL and SPLIT modes Styles - 160 Preset Styles + External files, Style Control - ACMP ON/OFF, SYNC STOP, SYNC START, START/STOP, INTRO/ENDING/rit., MAIN/AUTO FILL, Fingering - Multi Finger, Full Keyboard, Style Volume Music Database - 300 + External files Education Feature - Dictionary, Lesson 1-3, Repeat & Learn Registration Memory - 8 banks x 2 types Effects - Reverb - 9 types, Chorus - 4 types, Harmony - 26 types 30 Preset Songs + 5 User Songs + Accessory CD-ROM with 70 more Auxiliary jacks - PHONES/OUTPUT, DC IN 12V, USB, SUSTAIN Amplifier - 6 Watts per channel to two 2-way on-board speakers - 12cm x 2 + 3cm x 2 Power Supply - Adaptor - PA-150 (included) or an equivalent recommended by Yamaha, Batteries - Six D size, R20P (LR20) or equivalent batteries (optional) Unit Dimensions (W x D x H) - 1,178 x 412 x 137 mm (46-3/8 x 16-1/4 x 5-3/8); Weight - 8.3kg (18 lbs. 5 oz.) (not including batteries) Supplied Accessories - Music Rest, Accessory CD-ROM, Owner"s Manu